Turbo whistle

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  • cadiddy
    S2Forum Addict
    • Nov 2012
    • 294
    • Country: United Kingdom

    #1

    Turbo whistle

    So my 1.9tdi has an uber loud whistle from the turbo, I've replaced the top, short length of rubber hose for another one and the whistle is still there, any more areas to check?
    Cheers
    Cadan
  • minim
    S2Forum Addict
    • Aug 2013
    • 201
    • Country: Norway

    #2
    Originally posted by cadiddy
    So my 1.9tdi has an uber loud whistle from the turbo, I've replaced the top, short length of rubber hose for another one and the whistle is still there, any more areas to check?
    Cheers
    Cadan
    Remove the hose from maf to the turbo and check for play in the turbine. Almost sounds like your turbo is going down. In most cases you won't be able to hear a airleak if you did this test with the engine revving up.

    If you did this with applying pressure to the intake with the engine off i will suggest that you fill a spray bottle with soap water and spray it around on the hoses and look for places where bubbles accumulate.

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    • cadiddy
      S2Forum Addict
      • Nov 2012
      • 294
      • Country: United Kingdom

      #3
      So I checked the turbine shaft for play, there is some play there, is there supposed to be none? Only reason I say that is my old man said old turbos used to run on oil bearings, is this correct? If so is that a system utilised by the garret t3? I didnt have time to check for air leaks at the weekend, may have time tomorrow after work so will see.
      Cheers
      Cadan

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      • Sleeper_Avant
        S2Forum Fiend
        • Mar 2009
        • 2372
        • Country: England

        #4
        ideally smoke test it,

        if not pressurise it,

        failing that look for damp oil patches.

        checked the intercooler?

        and it should have a little bit of play up down, left right but not forward and back

        and yes, about the same as a T3
        1993 URS4 Avant Emerald Green 350+bhp
        1991 Ford Sierra Sapphire 4x4 in Magenta
        BoooOOOSSSSSTTTT BANG BANG CHIRP CHIRP

        Comment

        • cadiddy
          S2Forum Addict
          • Nov 2012
          • 294
          • Country: United Kingdom

          #5
          At the moment I haven't done anything but change the top hose as I heard these can deteriorate, there is an oily residue inside the top hose don't know if this is significant?
          When I first got the car it was smoking like a train, whilst looking over the engine bay I found that one of the hoses to/from the intercooler was not clamped properly, as in the jubilee clip was hanging off, I connected that up and the smoking stopped. So I don't know how long it was like that so don't know if it caused any damage.
          Cheers

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